[11:26] <benjaoming> cjwatson: thanks so much for reading through logs and making amendments!! It makes sense that it's possible to re-enable an older build. The functionality might be a bit shaky (I'm getting "Launchpad internal error" emails) -- it managed to bring back the Trusty and Wily builds, but Vivid and Precise won't.
[11:31] <cjwatson> benjaoming: Did you copy with binaries?
[11:31] <cjwatson> You must, if they've already been built.
[11:48] <benjaoming> cjwatson: yes, I did the copy without rebuilding "copy binaries". No error details in the emails, just that it was logged with id OOPS-xxx
[11:48] <ubot5`> https://oops.canonical.com/?oopsid=OOPS-xxx
[11:49] <benjaoming> Oh nifty, OOPS-751482087c16996db75e22ed71fb49dc
[11:49] <ubot5`> https://oops.canonical.com/?oopsid=OOPS-751482087c16996db75e22ed71fb49dc
[11:51] <cjwatson> Curious, not on oops.c.c.  Let's see
[11:54] <cjwatson> (waiting for sysadmin to see what's up with the oops queue)
[15:01] <cjwatson> benjaoming: Oh, hah - you've run into https://bugs.launchpad.net/launchpad/+bug/1475358, probably due to doing several copies around the same time
[15:01] <ubot5`> Ubuntu bug 1475358 in Launchpad itself "Package diffs should be unique by from_source/to_source but aren't" [Critical,Triaged]
[15:02] <cjwatson> Which is relatively high in my stack of browser tabs that I intend to do something about ...
[15:02] <benjaoming> cjwatson: yes precisely that :) my first attempt was to copy for all 4 dists at the same time.
[15:03] <cjwatson> Right, one at a time would have been fine, but unfortunately you're now stuck until we fix that bug, unless you reupload with a slightly incremented version number
[15:06] <benjaoming> cjwatson: I can live with the slight incrementation of the version numbers :) thanks for the solution!!
[15:11] <cjwatson> Definitely want to fix that one soon, as it's a data integrity problem.